Mitsubishi Electric PUHZ-HRP HA2, Installation Manual

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S1
S2
S3
S1
S2
S3
10
6.2. Field electrical wiring
Outdoor unit model HRP71V HRP100V HRP100, 125Y HRP200Y
Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V
3N~ (3 ph 4-wires),
50 Hz, 400 V
3N~ (3 ph 4-wires),
50 Hz, 400 V
Outdoor unit input capacity Main switch (Breaker) *1 32 A 40 A 16 A 32 A
Wiring
Wire No. × size (mm
2
)
Outdoor unit power supply 3 × Min. 4 3 × Min. 6 5 × Min. 1.5 5 × Min. 4
Indoor unit-Outdoor unit *2 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar)
Cable length 50m:3×4 (Polar)/
Cable length 80m:3×6 (Polar)
Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 2.5
Remote controller-Indoor unit *3 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
Circuit rating
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
*4 AC 230 V AC 230 V AC 230 V AC 230 V
Indoor unit-Outdoor unit S1-S2 *4 AC 230 V AC 230 V AC 230 V AC 230 V
Indoor unit-Outdoor unit S2-S3 *4 DC 24 V DC 24 V DC 24 V DC 24 V
Remote controller-Indoor unit *4 DC 12 V DC 12 V DC 12 V DC 12 V
*1. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
*2. (HRP71-125)
Max. 45 m
If 2.5 mm 2 used, Max. 50 m
If 2.5 mm
2
used and S3 separated, Max. 80 m
(HRP200)
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
*3. The 10 m wire is attached in the remote controller accessory.
*4. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
A-Control
Outdoor Unit
3 poles isolator
Power supply
Isolator
A-Control
Indoor Unit
Warning:
· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when
the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
· Turn on the main power when the ambient temperature is - 20°C or higher.
· In below - 20°C condition, it needs at least 4hr stand by to operate in order to warm the electrical parts.
6. Electrical work
INDOOR-OUTDOOR CONNECTING CABLE (HRP200)
Cross section of cable Wire size (mm 2 ) Number of wires Polarity L (m)*6
Round
2.5 3
Clockwise : S1-S2-S3
*Pay attention to stripe of yellow and green
(30)
*2
Flat
2.5 3
Not applicable
(Because center wire has no cover finish)
Not applicable
*5
Flat
1.5 4
From left to right : S1-Open-S2-S3
(18)
*3
Round
2.5 4
Clockwise : S1-S2-S3-Open
*Connect S1 nad S3 to the opposite angle
(30)
*4
*1 :Power supply cords of appliances shall not be lighter than design 60245 IEC or
227 IEC.
*2 :In case that cable with stripe of yellow and green is available.
*3 :In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm
2
.
*4 :In case of regular polarity connection (S1-S2-S3).
*5 :In the flat cables are connected as this picture, they can be used up to 30 m. *6 :Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or
materials, etc.
(3C Flat cable × 2)
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication error if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the inter-
mediate connection point.
S1 S3 S2
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.